CN217340316U

CN217340316U - Portable shellfish catcher of nuclear power plant

Info

Publication number: CN217340316U
Application number: CN202220438432.0U
Authority: CN
Inventors: 刘生根; 张富美; 郭树生; 张伟; 李剑波; 赵鸿雁; 李德睿; 张建龙
Original assignee: Cgn Huizhou Nuclear Power Co ltd; China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Current assignee: Cgn Huizhou Nuclear Power Co ltd; China General Nuclear Power Corp; China Nuclear Power Technology Research Institute Co Ltd; CGN Power Co Ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-09-02
Anticipated expiration: 2032-03-01

Abstract

The utility model discloses a portable shellfish trap of nuclear power plant, it includes: the barrel is provided with a containing cavity, and a water inlet pipe and a water outlet pipe which are respectively communicated with the containing cavity from the side wall of the barrel; the filter element assembly is accommodated in the accommodating cavity and is provided with a plurality of cylindrical filter elements; and the cylinder cover is detachably arranged at the top of the cylinder body, the cylinder cover is provided with a driving device, the driving device is provided with a main shaft, and the filter element assembly is arranged on the main shaft and can rotate along with the main shaft under the driving of the driving device. Compared with the prior art, the utility model discloses among the portable shellfish catcher of nuclear power plant, be equipped with a plurality of cylinder type filter cores in the accommodating cavity of barrel, compare with the conical filter screen face of ball-type shellfish catcher, the section that overflows of a plurality of cylinder type filter cores improves the one time at least, consequently can show reduction equipment flow resistance.

Description

Portable shellfish catcher of nuclear power plant

Technical Field

The utility model relates to a filter and the technical field of decontaminating, more specifically say, the utility model relates to a portable shellfish trap of nuclear power plant.

Background

As nuclear power plant nuclear safety level water filtration equipment, the shellfish catcher in the nuclear power plant has the main functions of filtering grown marine organisms in a water inlet pipeline of a system, providing clean seawater for a plate heat exchanger at the downstream of the system, ensuring that the plate heat exchanger is not blocked by shellfish and algae in the seawater and ensuring the flow of a cold source required by the plate heat exchanger. The shellfish catcher in the nuclear power plant has the important functions of guaranteeing the heat export of a reactor and the integrity of a reactor core, and is key equipment in the cold source safety and nuclear safety guarantee links of the nuclear power plant.

In the prior art, the shellfish catcher in the nuclear power plant generally adopts a spherical shellfish catcher, but the conical filter screen surface of the spherical shellfish catcher generally has the problem of small overflowing section, and is easily blocked by various foreign matters in the actual use process. Once the shellfish catcher of the nuclear power plant is blocked and the equipment is unavailable, a series of serious consequences such as unit fault signals, shutdown and shutdown, loss of safety level heat traps and the like can be caused.

In view of the above, it is necessary to provide a portable shellfish catcher with an ideal flow cross section for nuclear power plants.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an: overcomes at least one defect in the prior art and provides a portable shellfish catcher with an ideal flow cross section for a nuclear power plant.

In order to achieve the above object, the present invention provides a portable shellfish catcher for nuclear power plants, which comprises:

the barrel is provided with a containing cavity, and a water inlet pipe and a water outlet pipe which are respectively communicated with the containing cavity from the side wall of the barrel;

the filter element assembly is accommodated in the accommodating cavity and is provided with a plurality of cylindrical filter elements; and

the cylinder cover is detachably mounted at the top of the cylinder body, a driving device is arranged on the cylinder cover and provided with a main shaft, and the filter element assembly is mounted on the main shaft and can rotate along with the main shaft under the driving of the driving device.

According to the utility model discloses an embodiment of portable shellfish catcher of nuclear power plant, backup pad and bottom suspension fagging are gone up to fixedly connected with on the main shaft, it is equipped with the through-hole to go up backup pad and bottom suspension fagging correspondence, cylinder type filter core runs through-hole and fixed mounting in go up on the backup pad.

According to the utility model discloses an embodiment of portable shellfish trap of nuclear power plant, a plurality of cylinder type filter cores center on main shaft is concentric, interval distribution.

According to the utility model discloses an embodiment of portable shellfish catcher of nuclear power plant, the cylinder type filter core is equipped with the rotation axis and installs the commentaries on classics brush in the rotation axis.

According to the utility model discloses an embodiment of portable shellfish trap of nuclear power plant, be equipped with transmission between main shaft and the rotation axis, the drive arrangement drive the main shaft rotates to drive through transmission the rotation axis rotates with changeing the brush.

According to the utility model discloses an embodiment of portable shellfish trap of nuclear power plant, the top of barrel is equipped with and is equipped with the flange, the bottom correspondence of cover is equipped with the lower flange, go up the flange and pass through bolted connection with the lower flange.

According to the utility model discloses an embodiment of portable shellfish catcher of nuclear power plant, be equipped with the sealing washer between upper flange and the lower flange.

According to the utility model discloses an embodiment of portable shellfish trap of nuclear power plant, the bottom of barrel is equipped with the intercommunication accept the blow off pipe of cavity.

According to the utility model discloses an embodiment of portable shellfish trap of nuclear power plant, the bottom of barrel is equipped with the intercommunication the back flush water pipe of accommodating cavity.

According to the utility model discloses an embodiment of portable shellfish trap of nuclear power plant, the bottom of barrel is equipped with the support the strutting arrangement of barrel.

According to the utility model discloses an embodiment of portable shellfish catcher of nuclear power plant, the equal level setting of inlet tube and outlet pipe.

Compared with the prior art, the utility model discloses portable shellfish catcher of nuclear power plant has following advantage: the accommodating cavity of the cylinder body is internally provided with a plurality of cylindrical filter elements, and compared with the conical filter screen surface of the spherical shellfish catcher, the overflowing sections of the cylindrical filter elements are at least doubled, so that the flow resistance of equipment can be obviously reduced, and the portable shellfish catcher in a nuclear power plant is not easy to block.

Drawings

The utility model discloses portable shellfish catcher of nuclear power plant and technological effect go on the detailed description below with concrete embodiment in combination with the attached drawing, wherein:

fig. 1 is a schematic structural diagram of the portable shellfish catcher in the nuclear power plant.

Fig. 2 is a schematic sectional view of the portable shellfish catcher in the nuclear power plant.

Fig. 3 is a top view of the portable shellfish trap of the nuclear power plant shown in fig. 1.

Fig. 4 is a schematic sectional view of the filter element assembly in the portable shellfish catcher of nuclear power plant.

Wherein:

10- -cylinder; 100- -a containment cavity; 102- -a water inlet pipe; 104- -the outlet pipe; 106- -upper flange; 108- -a drain; 110- -a support means; 112- -water distribution tray; 20- -a filter element assembly; 200-cylindrical filter element; 202- -upper support plate; 204- -lower support plate; 206- -axis of rotation; 208- -rotating brush; 30- -cylinder cover; 300- -a drive device; 302- -main shaft; 304- -a seal ring; 306-lower flange.

Detailed Description

In order to make the objects, technical solutions and technical effects of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and not limitation.

Referring to fig. 1 to 4, the utility model provides a portable shellfish catcher for nuclear power plant, which comprises:

the barrel 10 is provided with a containing cavity 100, and a water inlet pipe 102 and a water outlet pipe 104 which are respectively communicated with the containing cavity 100 from the side wall of the barrel 10;

a filter element assembly 20 accommodated in the accommodating cavity 100, the filter element assembly 20 being provided with a plurality of cylindrical filter elements 200; and

the cylinder cover 30 is detachably mounted at the top of the cylinder 10, a driving device 300 is arranged on the cylinder cover 30, the driving device is provided with a main shaft 302, and the filter element assembly 20 is mounted on the main shaft 302 and can rotate along with the main shaft 302 under the driving of the driving device 300.

The cylinder 10 is a pressure-bearing boundary of the portable shellfish catcher in the nuclear power plant, can be produced and manufactured according to GB/T150 pressure vessel, adopts a carbon steel lining glue mode, and carries out 100 percent RT nondestructive testing on a welding line according to NB/T47013.2. According to the utility model discloses an embodiment, the design pressure of barrel 10 is 9bar, and test pressure 13.5 bar.

Referring to fig. 1, the housing 10 has a receiving cavity 100 for receiving the filter element assembly 20. The two opposite side walls of the cylinder 10 are provided with a water inlet pipe 102 and a water outlet pipe 104, and the water inlet pipe 102 and the water outlet pipe 104 are respectively communicated with the accommodating cavity 100. In the embodiment shown in fig. 1, the inlet pipe 102 and the outlet pipe 104 are both horizontally disposed, and the inlet pipe 102 is located below the outlet pipe 104. The filter medium enters the housing cavity 100 from the water inlet pipe 102, is filtered by the filter element assembly 20, and then flows out from the water outlet pipe 104.

Referring also to fig. 2, the bottom of the cylinder 10 is provided with a water distribution plate 112, a back flush water pipe (not shown), a sewage pipe 108 communicating with the receiving cavity 100, and a portable support device 110 (such as a support leg), wherein the water distribution plate 112 is fixedly installed on the inner sidewall of the cylinder 10 to provide an inflow passage for the filter medium and a bottom support for the filter element assembly 20; the back flush water pipe can be designed to be more than DN150, and is not easy to be blocked by large-size dirt; the portable shellfish catcher in the nuclear power plant can be installed by adopting the portable supporting device 110 without being fixed on a through-wall vertical pipeline, so that the application scene of the portable shellfish catcher in the nuclear power plant is expanded.

Referring to fig. 3 and 4, the filter element assembly 20 is made of duplex stainless steel material and is provided with a plurality of cylindrical filter elements 200, each cylindrical filter element 200 is formed by winding a filter screen on which 2mm mesh openings are formed. In the embodiment shown in fig. 4, an upper support plate 202 and a lower support plate 204 are fixedly connected to the main shaft 302, through holes are correspondingly formed in the upper support plate 202 and the lower support plate 204, and the cylindrical filter element 200 penetrates through the through holes and is fixedly mounted on the upper support plate 202. In the embodiment shown in fig. 3, a plurality of cylindrical cartridges 200 are concentrically and equally spaced about a main axis 302. According to actual requirements, the number of the cylindrical filter elements 200 arranged in the filter element assembly 20 and the distance between adjacent cylindrical filter elements 200 can be adjusted so as to obtain an ideal filtering effect. For example, 4, 6, 8 or other numbers of cylindrical filter elements 200 may be uniformly distributed around the circumference of the rotating shaft 302.

With continued reference to fig. 4, each cylindrical filter element 200 has a rotating shaft 206 and a rotating brush 208 mounted on the rotating shaft 206. The rotating shaft 206 is fixedly provided with a filter element cover (not shown), the size of the filter element cover is larger than that of the through hole arranged on the upper supporting plate 202, and the filter element cover can be buckled on the through hole and connected with the cylindrical filter element 200 through a bolt. According to the utility model discloses an embodiment of the portable shellfish catcher of nuclear power plant is equipped with transmission (like gear drive) between main shaft 302 and the rotation axis 206, and when drive arrangement 300 started, main shaft 302 rotated to drive rotation axis 206 through transmission and rotate. The rotary brush 208 arranged on the rotating shaft 206 can forcedly remove dirt on the screen surface of the cylindrical filter element 200, so that the screen surface is prevented from being blocked by the dirt.

Referring to fig. 2, the cover 30 is shaped and sized to fit the top of the can body 10 and is sealingly mounted on the top of the can body 10. In the embodiment shown in fig. 2, the top of the cylinder 10 is provided with an upper flange 106, the bottom of the cylinder cover 30 is correspondingly provided with a lower flange 306, the upper flange 106 and the lower flange 306 are correspondingly provided with through holes (not shown), and the upper flange 106 and the lower flange 306 are connected through bolts installed in the through holes. Further, to improve sealing performance, a seal ring 304 may be provided between the upper flange 106 and the lower flange 306, as desired.

It is understood that the driving device 300 may be a common driving device, and may include a motor, a speed reducer, a bearing, a speed reducer support, a bearing seat, and the like, and the bearing is sealed by a packing. One end of the main shaft 302 is fixed on the driving device 300 and can rotate along with the driving device 300, the other end of the main shaft 302 is supported in a bearing arranged on the water distribution disc 112, the driving device 300 drives the filter element assembly 20 to rotate through driving the main shaft 302, and the cylindrical filter elements 200 of the filter element assembly 20 can sequentially rotate to the position of the sewage discharge pipe 108 for back washing and sewage discharge.

It can be seen from the description of the embodiment of the present invention that the portable shellfish catcher of nuclear power plant has the following advantages: the accommodating cavity 100 of the cylinder 10 is provided with a plurality of cylindrical filter elements 200, and compared with the conical filter screen surface of the spherical shellfish catcher, the flow cross section of the cylindrical filter elements 200 is at least doubled, so that the flow resistance of the equipment can be obviously reduced. In addition, when the dirt in the cylindrical filter element 200 is accumulated to a certain degree, the main shaft 302 can rotate to drive the cylindrical filter element 200 to rotate to the drain pipe 108 for back flushing and dirt removal.

According to the principle, the present invention can also make appropriate changes and modifications to the above-described embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, such terms are used for convenience of description and are not to be construed as limiting the invention in any way.

Claims

1. A portable shellfish trap for nuclear power plants, comprising:

2. The portable shellfish catcher of nuclear power plant as claimed in claim 1, wherein the main shaft is fixedly connected with an upper supporting plate and a lower supporting plate, the upper supporting plate and the lower supporting plate are correspondingly provided with through holes, and the cylindrical filter element penetrates through the through holes and is fixedly mounted on the upper supporting plate.

3. The portable shellfish trap of claim 1, wherein said plurality of cylindrical filter elements are concentrically and spaced about said main axis.

4. The portable shellfish trap of claim 1, wherein said cylindrical filter element is provided with a rotating shaft and a rotating brush mounted on the rotating shaft.

5. The portable shellfish catcher of nuclear power plant as recited in claim 4, wherein a transmission device is disposed between said main shaft and said rotary shaft, and said driving device drives said main shaft to rotate and drives said rotary shaft and said rotary brush to rotate through said transmission device.

6. The portable shellfish catcher of nuclear power plant as claimed in claim 1, wherein an upper flange is provided on the top of the cylinder, a lower flange is correspondingly provided on the bottom of the cylinder cover, and the upper flange and the lower flange are connected by bolts.

7. The portable shellfish trap of claim 6, wherein a sealing ring is provided between said upper and lower flanges.

8. The portable shellfish catcher for nuclear power plant according to claim 1, wherein a drain pipe communicated with the accommodating cavity is arranged at the bottom of the cylinder.

9. The portable shellfish catcher of nuclear power plant as recited in claim 1, wherein a back flush water pipe communicating with said housing cavity is provided at the bottom of said cylinder.

10. The portable shellfish trap of any of claims 1-9, wherein the bottom of the cylinder is provided with a support means for supporting the cylinder.

11. The portable shellfish trap of any of claims 1-9, characterized in that both the inlet pipe and the outlet pipe are horizontally arranged.